Home
Class 12
PHYSICS
To derive the relevant formula for refle...

To derive the relevant formula for reflection by spher cal mirrors and refraction by lenses we must adopt sign conventions for measuring distances.Two lenses of powers +7D and -3D are combined. The focal length of the combination would be

A

-50 cm

B

+25cm

C

-25cm

D

+50 cm

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

To derive the relevant formula for reflection by spher cal mirrors and refraction by lenses we must adopt sign conventions for measuring distances.State cartesian sign conventions used in ray optics.

To derive the relevant formula for reflection by spher cal mirrors and refraction by lenses we must adopt sign conventions for measuring distances. Draw the ray diagram for the image formed by a concave lens

To derive the relevant formula for reflection by spher cal mirrors and refraction by lenses we must adopt sign conventions for measuring distances.Show that f= R/2 In the case of concave mirror, where f is the focal length and R is the radius of curvature.

Combination of lenses are used in optical instruments to obtain the required power. Obtain an expression for the effective focal length of the combination of two thin convex lenses in contact.